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    • 6. 发明授权
    • Method of determining laser stabilities of optical materials, crystals selected according to said method, and uses of said selected crystals
    • 确定光学材料的激光稳定性的方法,根据所述方法选择的晶体以及所述选择的晶体的用途
    • US07688444B2
    • 2010-03-30
    • US11838429
    • 2007-08-14
    • Ute NaturaDietmar KeutelLutz ParthierAxel Engel
    • Ute NaturaDietmar KeutelLutz ParthierAxel Engel
    • G01J3/30
    • G01N21/6402
    • The method determines laser stability of an optical material, which is suitable for making an optical element through which high-energy light passes. The method includes pre-irradiation to produce radiation damage and measurement of the resulting induced non-intrinsic fluorescence. The method is distinguished by excitation of induced fluorescence immediately after pre-irradiation and after at least ten minutes after pre-irradiation with light of a wavelength between 350 and 810 nm, and measurement and quantitative evaluation of fluorescence intensities at wavelengths between 550 nm and 810 nm. Especially laser-stable optical materials, particularly CaF2 crystals, have a normalized difference (Z) of the fluorescence intensities measured at a first time immediately after pre-irradiation and at a second time at least ten minutes after the pre-irradiation, as calculated by the following equation (1): Z=(I2,λ1,λ2−I1,λ1,λ2)I2,λ1,λ2  (1), which is less than 0.3.
    • 该方法确定光学材料的激光稳定性,其适合于制造高能量光通过的光学元件。 该方法包括预辐射以产生辐射损伤并测量所得到的诱导的非固有荧光。 该方法的特征在于在预辐射之后立即激发诱导的荧光,并且在预先在350和810nm之间的波长的光照射后至少10分钟之后,以及在550nm和810之间的波长处的荧光强度的测量和定量评估 nm。 特别是激光稳定的光学材料,特别是CaF 2晶体,具有在预照射之后的第一次测量的荧光强度的标准化差(Z),以及在预辐射后的至少十分钟的第二时间,如 以下等式(1):Z =(I2,λ1,λ2-I1,λ1,λ2)I2,λ1,λ2(1)小于0.3。
    • 7. 发明申请
    • METHOD OF DETERMINING LASER STABILITIES OF OPTICAL MATERIALS, CRYSTALS SELECTED ACCORDING TO SAID METHOD, AND USES OF SAID SELECTED CRYSTALS
    • 确定光学材料的激光稳定性的方法,根据所述方法选择的晶体以及所选择的晶体的使用
    • US20080043221A1
    • 2008-02-21
    • US11838429
    • 2007-08-14
    • Ute NaturaDietmar KeutelLutz ParthierAxel Engel
    • Ute NaturaDietmar KeutelLutz ParthierAxel Engel
    • G01N1/00
    • G01N21/6402
    • The method determines laser stability of an optical material, which is suitable for making an optical element through which high-energy light passes. The method includes pre-irradiation to produce radiation damage and measurement of the resulting induced non-intrinsic fluorescence. The method is distinguished by excitation of induced fluorescence immediately after pre-irradiation and after at least ten minutes after pre-irradiation with light of a wavelength between 350 and 810 nm, and measurement and quantitative evaluation of fluorescence intensities at wavelengths between 550 nm and 810 nm. Especially laser-stable optical materials, particularly CaF2 crystals, have a normalized difference (Z) of the fluorescence intensities measured at a first time immediately after pre-irradiation and at a second time at least ten minutes after the pre-irradiation, as calculated by the following equation (1): Z=(I2,λ1,λ2−I1,λ1,λ2)I2,λ1,λ2,   (1) which is less than 0.3.
    • 该方法确定光学材料的激光稳定性,其适合于制造高能量光通过的光学元件。 该方法包括预辐射以产生辐射损伤并测量所得到的诱导的非固有荧光。 该方法的特征在于在预辐射之后立即激发诱导的荧光,并且在预先在350和810nm之间的波长的光照射后至少10分钟之后,以及在550nm和810之间的波长处的荧光强度的测量和定量评估 nm。 特别是激光稳定的光学材料,特别是CaF 2晶体,具有在照射后立即第一次测量的荧光强度的归一化差异(Z),以及至少在十分钟后的第二时间 通过以下等式(1)计算的预辐射:<?in-line-formula description =“In-line Formulas”end =“lead”?> Z =(I 2,λ1,λ2 2,lambda1,λ2,(1)<?in-line-formula description =“在线公式” end =“tail”?>小于0.3。